Planck



J. R. MARSDEN.

MACHINE FOR SANDPAPERING 0R SMOOTHING WOOD MOLDINGS. APPLICATION FILED FEB.2-5, 1919.

1,3 1 g, 1 93"., I Patented Aug. 5, 1919 4 SHEETS-SHEET I.

lnventorz- 'rlm COLUMBIA PLANOORAPII c0. WASHINGTON, n. c.

J. R. MARSDEN.

MACHINE FOR SANDPAPERING 0R SMOOTHING WOOD MOLDINGS.

APPLICATION man FEB.25.19I9.

1,312,1 93. Patented Aug. 5,1919.

4 SHEETS-SHEET 2- Inventor? Wm /.7%omm J. R. MAHSDEN.

MACHINE FOR SANDPAPERING 0R smoomme WOOD MOLDINGS.

M APPLICATION FILED FEB. 25,1919- 1, 1291930 Patented Aug. 5, 1919.

4 SHEETS-SHEET 3.

Hm mm ml: COLUMBIA PLANOGRAPH co., WASHINGTON. n. c.

' J. R. MARSDEN.

MACHINE FOR SANDPAPERING 0R SMOOTHING WOOD MOLDINGS.

Patented Aug. 5, 1919.

4 SHEETS SHEET 4 APPLICATION FILED FEB. 25, I919.

wmmsw A UNITED STATES PATENT OFFICE.

JOSHUA ROSGOE MABSDEN, 0F HUDDERSFIELD, ENGLAND.

1' '0 all whom it may concern:

Be it known that I, Josr-mA Rosoon MARS- DEN, a subject of the King of Great Britain, residing at Back Union street, Huddersfield, in the county of York, England, have invented certain new and useful Improvements in Machines [for Sand apering or Smoothing Wood Moldings, 0 which the following is a specification.

The machine which isthe subject of this invention comprises a number of adjustable blocks orreverse molds having surfaces of the abrasive or other character required, and means for supportingand feedingforward the molding in rubbing contact with the said blocks. The arrangement of the said machine and the means for adjusting the blocks are described with reference to the annexed drawings, wherein Figure 1 is a side elevation of the machine.

Fig. 2 is an end elevation.

Fig. 3 is a plan. 1 M

Fig. 4 is an elevation on alarger scale of one of the devices for rubbing the molding.

The reference numeral 1 indicates the framework of the machine, 2 the main shaft, provided with a fast pulley 3 and loose pulley 4, the belt (not shown) which con nects such pulleys with the usual line shafting being controlled by means of the fork 5 and handle 6. Also mounted ion the shaft 2 are sprocket wheels or pulleys 7 and 8, (Fig. 3) which by chains or belts 9 and 10 respec tively drive wheels 11 and 12 on studs 13 and 14 below the table top 15 of the machine. On these studs are mounted feed rollers 1.6 and 17 which are preferably rubber coated, serrated or fluted in order that they may by frictional contact feed the molding 18 (Fig. 2) through the machine. These feed rollers project slightly above the table top, which is cut away just where they are located.

At each end of the table 15 is an adjustable guide bar 19. At the feeding end are pedestals 20 and 21, in which the studs 22 and. 9.3 of rollers 24 and 25 are vertically adjustable by means of screws 26 and 27 actuated by hand wheels 28 and 29. The roller 25 is adapted to engage the top of the molding and the roller 24 is adapted to engage the upper surface of the molding at the lower part thereof, in order to counteract any tendency of the molding to tilt, and to hold it down in frictional contact with the feed roller 17. At the exit end of the machine is a pedestal 31 in which the Specification of Letters Patent.

Application filed February 25, 1919. Serial No.

MAcnInE For. SANDPAPERING on sivroornme woon Mommas.

Patented Aug. 5, 1919. 279,112.

stud'32 of the roller 33 is vertically adjustable by means of the screw 34 actuated by the handwheel 35. At the feeding end of the machine is a curved spring 86 lg, 3) the function ofwhich is to press the molding back against the guide bar 19. A frame 37 is secured to the table top 15 by foot plates 38. This frame comprises five or other number of pairs of dovetail guides 40, in each pair of which works a vertically movable slide 41, having on its back a lug 42 (Fig. 4),

in which works a screw-threaded rod 43 which passes freely through a boss 44 on the frame 37. Collars 39 and 47 are pinned to the rod 43, which terminates upwardly in a hand wheel 46.; rotating the hand wheel the lug 42 is raised or lowered on the rod 43,

the collar 39 in either case turning in contact with the top of the boss/'44. Between the collar 47 and the underside of the boss 44 is confined a spring 45 which tends to hold down the rod 43 and slide 41. If any projection on the molding passes under the reverse mold 54, the slide 41 and screw 43 can rise against the resistance of the spring, lifting the hand wheel 46 and collar 39 above the boss 44. Uponthe projection passing on, the spring 45 returns the parts to their previous positions.

To the lower part of the slide, is hinged a holder 48, on the back of which is a curved arm or quadrant 49 working through a hole in a horizontal extension 52 of the slide 41; the arm 49 is secured in any desired position in relation to the extension 52 by means of a set-screw 53, whereby the angle of inclination of the holder 48 can be regulated. In the holder 48 is secured a reverse mold 54, that is, a block or short length of molding shaped to register with the surface of the molding to be treated. The molded surfaces of the first four blocks which the molding encounters may be covered with sandpaper or like abrasive material, and that of the last block with leather or the like. The height of the block being adjusted by means of the rod 43, and its inclination by the arm 49, the block is thus caused to fit accurately upon the molding 18, as seen in Fig. 4.

Curved springs 55 (Fig. 3) may be employed to press on the major side of the molding in order to assist in preserving its due frictional contact with the blocks 54, as the molding, impelled by the feed rollers 16 and 17 travels under all the blocks, and is thereby smoothed. A number of anti-friction bowls or rollers'56 (indicated in dotted lines in Fig. 1) may be placed in a long slot in the table top. 15 in such manner as to come in contact with the underside of the traveling molding and'relieve it from unnecessary friction with the table top. The molding may travel through the machine at a speed of 50 ft. per minute or more or less.

,I claim as my invention 1. In a sandpapering machine, a stationarybed provided with'a series of vertical guides,.aseries of slides separately adjustable in the said guides, a series of holderspivoted at one end to the slides and provided with blocks for the abrasive material, means for locking the holders to the sides after the holders have been ad- .justed pivotally, and means for sliding the work along the bed in contact with the abrasive material on the blocks.

2. In a sandpapering machine, a stationary bed provided with a series of vertical guides, adjusting screws journaled in the guides and engaging with the slides, springs which press the screws downwardly and permit them to slide upwardly, a series of holders pivoted at one end to the slides and provided with blocks for the abrasive 'lnittllitl, means for locking the holders to the slides after the holders have been adjusted pivotally,-and means for sliding the workalong the bed in contact with the abrasive material on the blocks.

Copies 01 this patent may be obtained for said holes, blocks for the abrasive material secured to the said holders. and means For sliding the work along the bed in contact with the abrasive material on the said blocks.

4. In a sandpapering machine, a stationary bed provided with a longitudinal opening, a power driven roller projecting upwardly from the said opening and operating'to slide the work along the bed, two

pedestals secured to the bed and arranged one on each side of the said opening, studs projeoting laterally from the pedestals into the space between them, means for adjusting the height of the said studs above the bed.

.and rollers journaled on the said studs and operating to hold the work in contact with 0 the power driven roller.

In testimony whereof I aflix my signature in the presence of two witnesses.

JOSHUA ROSCOE MARSDEN.

lVitnesses ERNEST PRIEs'rLEY NEWTON, GEORGE HAROLD PEARSON.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G, 

